Error is between steps 4 and 5. It should say:
Step 4: -9x < 27
Now divide by -9
Step 5: x > -3
Note that the inequality changes direction.
When you mean multiply or divide an inequality by a negative number, the inequality changes direction.
For example:
4 < 5
Multiply by -1:
-4 > -5
Another example:
-5 < 0
5 > 0
Answer:
119 maybe, not completely sure
Step-by-step explanation:
I think 119
Step-by-step explanation:
-3.5z - 2 + 1z - 3
Solving like terms
-2.5z - 5
Answer:
10 miles
Step-by-step explanation:
Given: Bike goes 8 miles south and then 6 miles east
To find: distance between the final point and the starting point
Solution:
<u>Pythagoras Theorem</u>
In a right angled triangle, square of hypotenuse is equal to the sum of squares of the two sides.
In ΔOAB,

Put 

Take square root on both sides.

So, distance between the final point and the starting point is 10 miles
Answer:
(-x +5) -5/(3x)
Step-by-step explanation:
Divide term by term.
= (3x^2)/(-3x) +(-15x)/(-3x) +(5)/(-3x)
= -x +5 -5/(3x)